Table 1.
Correlation of PD-L1 expression with clinicopathological parameters of COAD patients.
| Variables | Cases (n) | PD-L1 expression | P-value | |
|---|---|---|---|---|
| Low (n = 228) | High (n = 12) | |||
| Age | ||||
| ⩽60 | 86 | 84 (97.7%) | 2 (2.3%) | 0.1563 |
| >60 | 154 | 144 (93.5%) | 10 (6.5%) | |
| Gender | ||||
| Female | 112 | 105 (93.8%) | 7 (6.2%) | 0.4727 |
| Male | 128 | 123 (96.1%) | 5 (3.9%) | |
| Pathologic stage | ||||
| I–II | 137 | 131 (95.6%) | 6 (4.4%) | 0.6110 |
| III–IV | 103 | 97 (94.2%) | 6 (5.8%) | |
| Lymphatic invasion | ||||
| No | 167 | 162 (97.0%) | 5 (3.0%) | 0.0310 |
| Yes | 73 | 66 (90.4%) | 7 (9.6%) | |
| Histological type | ||||
| CMA | 33 | 30 (90.9%) | 3 (9.1%) | 0.2456 |
| CA | 207 | 198 (95.7%) | 9 (4.4%) | |
PD-L1: programmed cell-death 1 ligand 1; COAD: colon adenocarcinoma; CMA: colon mucinous adenocarcinoma; CA: colon adenocarcinoma.